TurboTax has no control over when the IRS issues your stimulus check, nor can TurboTax track it down for you. Only the IRS is in control. Sorry for your frustration. The IRS is not taking phone calls.
https://www.irs.gov/newsroom/economic-impact-payments-what-you-need-to-know
https://www.irs.gov/coronavirus/get-my-payment